Bipod dual-mount attachment base



FIG. 1 is a perspective view of a bipod dual-mount attachment base showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof.

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a right side elevational view thereof; and,

FIG. 7 is a left side elevational view thereof.

The broken lines in the drawings depict environmental features, specifically a gear, holes, nuts and bolts that forms no part of the claimed design. 

CLAIM The ornamental design for a bipod dual-mount attachment base, as shown and described. 